A set of five problems to practise identifying organic compounds from % composition, infrared (IR) spectroscopy and mass spectrometry. Suitable for AS or A2 level, this type of exercise is good preparation for exam questions on identifying organic compounds using combined spectroscopic techniques. It could also be used for revision or consolidation of IR spectroscopy and mass spectrometry, as well as for assessment for learning. Full answers to all the problems are provided. This resource was developed primarily for the OCR A level Chemistry specification but is useful for all specifications. It relates to the following sections : AS: Module 4 – Core organic chemistry Part 2 – Alcohols, haloalkanes and analysis 4.2.4 Analytical techniques A2: Module 6 – Organic chemistry and analysis Part 3 – Analysis 6.3.2 Spectroscopy (Combined techniques) Please review! Content covered • Calculating empirical formula from % composition • Calculating molecular formula from empirical formula and molar mass, using the molecular ion peak on the mass spectrum • Using the infrared (IR) spectrum to identify bond stretches and hence functional group(s) present • Drawing structural formulae consistent with the molecular formula and IR data • Using mass spectrum to distinguish between the suggested structural formulae • Identifying fragments in the mass spectrum Duration: 1 part lesson and/or independent study Links Please see also: infrared (IR) spectroscopy - A level https://www.tes.com/teaching-resource/infrared-ir-spectroscopy-a-level-home-learning-self-study-12315096 mass-spectrometry - A level https://www.tes.com/teaching-resource/mass-spectrometry-a-level-home-learning-self-study-12287938 mass spectrometry summary AS home learning https://www.tes.com/teaching-resource/mass-spectrometry-summary-as-home-learning-coronavirus-12287495

This complete lesson on amount of substance and the mole is ideal for classroom and home learning. It features a 49 slide interactive PowerPoint including starter, group activities, quizzes, questions and plenary along with a 13 page worksheet and a lesson plan. Answers to all exercises are provided. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.3 Amount of substance Please review! Content covered: • Relative masses and the mole • Avogadro constant • Calculating number of atoms • Amount of substance • Molar mass • Calculating amount of substance from total mass and vice versa • Mole triangle Duration: 1-2 lessons Links Previous lesson: Topic 4 – Formulae and equations https://www.tes.com/teaching-resource/formulae-and-equations-ocr-as-chemistry-12186723 Next lesson: Topic 6 – Determining formulae https://www.tes.com/teaching-resource/determining-formulae-ocr-as-chemistry-12347977 Free resource - standard form, decimal places and significant figures https://www.tes.com/teaching-resource/standard-form-decimal-places-and-significant-figures-a-level-chemistry-12405507

This complete lesson on introducing organic chemistry is ideal for classroom home learning features a 46 slide interactive, animated PowerPoint as well as a starter activity and plenary along with a 10 page workbook and a lesson plan. Exam tips and answers to all exercises are provided. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 4 – Core organic chemistry Part 1 – Basic concepts and hydrocarbons 4.1.1 Basic concepts of organic chemistry Please review! Content covered: • Why carbon is special • Bonding in organic compounds • Different types of formulae • Types of organic compounds • Functional groups and homologous series Duration: 1 lesson Links Next lesson: Topic 41 - Naming hydrocarbons https://www.tes.com/teaching-resource/naming-hydrocarbons-ocr-as-chemistry-12242016

This complete lesson on atomic structure and isotopes in terms of protons, neutrons and electrons is ideal for classroom or home learning. It features a 29 slide interactive PowerPoint including starter, group activities, questions and plenary along with an 8 page worksheet and a lesson plan. An exam style question is also included. Answers to all exercises are provided. A fully interactive PowerPoint multiple choice quiz is provided as a plenary activity, along with the A, B, C, D cards needed in the classroom. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.1 Atomic structure and isotopes Please review! Content covered • Protons, neutrons and electrons – mass and relative charge • Atomic number and mass number • Isotopes • Key definitions Duration: one lesson Links Previous lesson: Topic 1: The changing atom https://www.tes.com/teaching-resource/the-changing-atom-ocr-as-chemistry-12182003 Next lesson: Topic 3: Atomic masses https://www.tes.com/teaching-resource/atomic-masses-ocr-as-chemistry-12183618 Bundle covering the whole of the OCR A level chemistry specification sections 2.1.1 and 2.1.2. (topics 1-4) https://www.tes.com/teaching-resource/atomic-masses-formulae-and-equations-ocr-as-chemistry-12348685

One of a series of FREE resources designed to help AS Chemistry students in year 12 to finish the AS specification by self-study before starting the A2 year. This knowledge organiser / poster / mat summarises all the important information about mass spectrometry in a colourful and concise way. It can be printed on one A4 page. For a more detailed treatment of the topic see Mass spectrometry – A level home learning https://www.tes.com/teaching-resource/mass-spectrometry-a-level-home-learning-12287938 which includes an interactive, animated PowerPoint and a worksheet with answers. This resource was developed primarily for the OCR A level Chemistry specification but is useful for all specifications. It relates to the following sections : AS: Module 4 – Core organic chemistry Part 2 – Alcohols, haloalkanes and analysis 4.2.4 Analytical techniques Please review! Content covered • diagram and description of a mass spectrometer • m/z • relative intensity • base peak • molecular ion • M+1 peak • fragments • interpreting the mass spectrum • mass spectrum of ethanol • summary of fragments for ethanol

This complete year 12 lesson on enthalpy changes covers part of OCR section 3.2.1 (Enthalpy changes). It includes the energetics topics: exothermic and endothermic reactions, enthalpy profile diagrams and definitions of enthalpy changes with their equations. It features a 43 slide interactive PowerPoint that illustrates the concepts in a lively, visual and systematic way and includes a starter, learning checks, clearly explained examples and a plenary quiz. A 13 page worksheet and answers to the exercise are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 3 – Periodic table and energy Part 2 – Physical chemistry 3.2.1 – Enthalpy changes Content covered: • What is enthalpy • Law of conservation of energy • Enthalpy change • Enthalpy profile diagrams • System and surroundings • Exothermic and endothermic reactions and examples • Activation energy • Standard enthalpy changes • Standard conditions • Definitions of enthalpy changes and their equations • Simple calculations involving enthalpy changes Duration: 1 lesson Please review! Links Previous topic: Topic 24 – Qualitative analysis https://www.tes.com/teaching-resource/qualitative-analysis-ocr-as-chemistry-13128777 Next topic: Topic 26 – Experimental determination of enthalpy changes https://www.tes.com/teaching-resource/experimental-determination-of-enthalpy-changes-ocr-as-chemistry-12517135 Free resource - standard form, decimal places and significant figures https://www.tes.com/teaching-resource/resource-12405507

This complete year 12 lesson on names and formulae of organic compounds with functional groups covers part of OCR section 4.1.1 (Basic concepts of organic chemistry). It features a 42 slide animated PowerPoint as well as a starter activity and plenary along with a 12 page workbook. Exam tips and answers to all exercises are provided. Ideal for the classroom or blended learning, this resource could be used as an introduction to the topic, or for revision, extension or consolidation. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following part of the specification: Module 4 – Core organic chemistry Part 1 – Basic concepts and hydrocarbons 4.1.1 Basic concepts of organic chemistry Content covered: • Application of IUPAC rules of nomenclature for systematically naming organic compounds • Practice naming organic compounds including those with functional groups • Revision of empirical and molecular formula and how to calculate them • Formulae of compounds with functional groups - Displayed formula - Structural formula - Skeletal formula Duration: 1 lesson Please review! Links Previous lesson: topic 41 – Naming hydrocarbons https://www.tes.com/teaching-resource/resource-12242016 Quiz: A question of naming alkanes https://www.tes.com/teaching-resource/resource-12243809 Bundle: Naming alkanes with quiz https://www.tes.com/teaching-resource/resource-12243823 Next lesson: topic 43 – Isomerism https://www.tes.com/teaching-resource/resource-12634065

This complete year 12 lesson on introduction to alkanes covers part of OCR sections 4.1.2 (Alkanes). Content covered includes uses of alkanes as fuels, bonding and shapes of alkanes and their physical properties. The resource features a 27 slide animated PowerPoint along with a 6 page workbook. There is a starter activity and a short quiz as a plenary. Exam tips and answers to the exercise are provided. Ideal for the classroom or blended learning, this resource could be used as an introduction to the topic, or for revision, extension or consolidation. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following part of the specification: Module 4 – Core organic chemistry Part 1 – Basic concepts and hydrocarbons 4.1.2 − Alkanes Content covered: Sources and uses of alkanes Definitions of fossil fuels and crude oil Uses of alkanes as fuels Bonding in alkanes Formation and rotation of sigma bonds Shapes of alkanes Intermolecular forces in alkanes in terms of non-polar molecules Melting and boiling points of alkanes in terms of London forces Effect of chain length and branching on London forces Duration: 1 lesson If you find this free resource useful, please leave a review! Links Previous lesson: topic 44 – Organic reagents and types of reaction https://www.tes.com/teaching-resource/organic-reagents-and-types-of-reaction-ocr-as-chemistry-12643937 Next lesson: topic 46 – Reactions of alkanes https://www.tes.com/teaching-resource/reactions-of-alkanes-ocr-as-chemistry-12987021 Lesson on naming hydrocarbons: https://www.tes.com/teaching-resource/naming-hydrocarbons-with-quiz-as-12243823 Lesson on isomerism, including further information on shapes of alkanes and alkenes: https://www.tes.com/teaching-resource/isomerism-ocr-as-chemistry-12634065

This complete year 12 lesson covers the qualitative analysis of ions including carbonate ions, sulfate ions, halide ions and ammonium ions. It explains the use of precipitation reactions and acid-base reactions to identify cations and anions. The resource features a 27 slide animated PowerPoint that illustrates and explains the concepts in a lively and visual way and includes images of the observations in the key reactions. . A starter and a plenary activity are also included. A 7 page worksheet and answers to all exercises are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 3 – Periodic table and energy Part 1 – The periodic table 3.1.4 – Qualitative analysis Content covered: • Precipitation and acid-base reactions • Tests for carbon dioxide and ammonia • Tests for anions including carbonate, sulfate, chloride, bromide and iodide ions • Sequence of tests for anions, with reasons • Analysing mixtures of anions • Tests for cations – ammonium ion Duration: 1 lesson Please review! Links Previous topic: Topic 24 – The halogens https://www.tes.com/teaching-resource/the-halogens-ocr-as-chemistry-13125529 Next topic: Topic 25 – Enthalpy changes https://www.tes.com/teaching-resource/enthalpy-changes-ocr-as-chemistry-12509439 Related topic: Topic 23 – Group 2 https://www.tes.com/teaching-resource/group-2-ocr-as-chemistry-13074756

This complete year 12 resource on percentage yield and atom economy includes an introduction to Green Chemistry, percentage yield, limiting reactant and atom economy and its importance for sustainability. It features a 53 slide interactive PowerPoint that illustrates the concepts in a lively, visual and systematic way and includes a starter, learning checks, clearly explained example calculations, and a true false quiz as plenary. A 13 page worksheet and answers to all exercises are provided. Ideal for the classroom or blended learning, this resource could be used to present the topic, or for revision, extension or consolidation. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.3 – Amount of substance Content covered: • Introduction to Green Chemistry • Reasons why reactions do not have 100% yield • % yield and how to calculate it • Calculations of % yield involving limiting reactant • Atom economy and its importance in the sustainability of a chemical process • Calculating atom economy • Example calculations – clearly illustrated in a highly visual way • Differences between atom economy and % yield • Comparing chemical processes in terms of sustainability (using production of ethanol as an example) Duration: 1-2 lessons Please review! Links Previous topic: Topic 9 – Moles and reactions https://www.tes.com/teaching-resource/moles-and-reactions-ocr-as-chemistry-12404411 Next topic: Topic 11 – Acids and bases https://www.tes.com/teaching-resource/acids-and-bases-ocr-as-chemistry-12747201 Bundle covering whole of 2.1.3 – Amount of substance https://www.tes.com/teaching-resource/moles-masses-concentrations-gas-volumes-and-reactions-12404451

This complete year 12 lesson on the periodic table includes the history of the periodic table, the features of the modern periodic table and periodicity. The resource features a 20 slide animated PowerPoint that illustrates the concepts in a lively and visual way and includes a starter, a jigsaw discussion activity on the periodic table with a quiz, and a true-false quiz that could be used as a plenary or a recap at the start of the next lesson. A 4 page worksheet and answers to all exercises, quizzes and discussion questions are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 3 – Periodic table and energy Part 1 – The periodic table 3.1.1 Periodicity Content covered: • The history of the periodic table, including Newlands’ and Mendeleev’s contributions • The structure of the modern periodic table – periods, groups and blocks • Relationship between electron configuration and the periodic table • Periodicity – the variation in properties when plotted against atomic number • Periodicity and metallic character • Metal and non-metals Duration: 1-2 lessons Please review! Links Previous topic: Topic 20 – Structure and bonding OCR AS Chemistry https://www.tes.com/teaching-resource/structure-and-bonding-ocr-as-chemistry-12933603 Next topic: Topic 22 Periodicity of ionisation energies and melting points https://www.tes.com/teaching-resource/periodicity-of-ionisation-energies-and-melting-points-ocr-as-chemistry-12974680 Related topic: Topic 14 Electronic configurations – shells, sub-shells and orbitals https://www.tes.com/teaching-resource/electron-configuration-shells-sub-shells-and-orbitals-ocr-as-chemistry-12207312

This introduction to standard form, decimal places and significant figures features a 14 slide interactive PowerPoint including explanations, examples and practice exercises. Answers to all exercises are given. This resource is complementary to the mathematical topics of chemistry A level in years 12 and 13, for example; amount of substance, concentrations, volumes of gases as well as equilibrium constants, energy changes and rates of reaction. Content covered: • Standard form • Decimal places and how to reduce them • Significant figures and how to reduce them • How to choose an appropriate number of significant figures in an answer Links Topic 5 – Amount of substance and the mole https://www.tes.com/teaching-resource/amount-and-moles-ocr-as-chemistry-12190652 Topic 6 – Determining formulae https://www.tes.com/teaching-resource/determining-formulae-ocr-as-chemistry-12347977 Topic 7 – Moles and gas volumes https://www.tes.com/teaching-resource/moles-and-gas-volumes-ocr-as-chemistry-12336053 Topic 8 – Moles and concentrations of solutions https://www.tes.com/teaching-resource/moles-and-concentration-of-solutions-ocr-as-chemistry-12391026 Bundle – Moles, masses, concentration, gas volumes and reactions https://www.tes.com/teaching-resource/moles-masses-concentrations-gas-volumes-and-reactions-12404451

This complete year 12 resource on acids, bases, alkalis, neutralization and salts includes formulae of acids, bases, alkalis and salts, equations for neutralization reactions and ionic equations. It features a 39 slide interactive PowerPoint that illustrates the concepts in a lively, visual and systematic way and includes a starter, learning checks, clearly explained examples of writing and balancing equations, and a quick quiz as plenary. A 17 page worksheet and answers to all exercises are provided. Ideal for the classroom or blended learning, this resource could be used to present the topic, or for revision, extension or consolidation. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.4 – Acids (part) Content covered: • Definitions of acid, base, alkali and salt • Formulae of acids, bases, alkalis and salts • The relationship between bases and alkalis • The pH scale • Everyday examples of acids and bases • Weak and strong acids • Diprotic acids • Writing and balancing neutralization reactions (including acid-carbonate reactions) • Ionic equations Duration: 1-2 lessons Please review! Links Previous topic: Topic10 – Percentage yield and atom economy https://www.tes.com/teaching-resource/percentage-yield-and-atom-economy-ocr-as-chemistry-12745344 Next topic: Topic 12 – Acid-base titrations https://www.tes.com/teaching-resource/acid-base-titrations-ocr-as-chemistry-12749636 Related topic: Topic 4 - Formulae and equations https://www.tes.com/teaching-resource/formulae-and-equations-ocr-as-chemistry-12186723

This complete year 12 lesson on electronegativity and bond polarity includes electronegativity, core charge, non-polar and polar covalent bonds and predicting the polarity of molecules from the bond polarities and the molecular shape. It features a 23 slide animated PowerPoint that illustrates the concepts in a lively and visual way and includes a starter, learning checks, animations, clearly explained examples and a plenary. A 6 page worksheet and answers to the exercises are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 2 – Electrons, bonding and structure 2.2.2 Bonding and structure Content covered • Definition of electronegativity • Atomic core and calculation of core charge • Factors affecting electronegativity • Pauling scale of electronegativity • Electronegativity and bond polarity • Non-polar and polar covalent bonds • Electronegativity and bonding type (including intermediate bonding) • Polarity of molecules from the bond polarities and the molecular shape • Predicting whether a molecule will have an overall dipole from its symmetry Duration: 1 lesson Please review! Links Previous topic: Topic 17 – Shapes of molecules and ions OCR AS Chemistry https://www.tes.com/teaching-resource/resource-12220291 Next topic: Topic 19 Intermolecular forces https://www.tes.com/teaching-resource/intermolecular-forces-ocr-as-chemistry-12927621

This is the first in a series of MULTIPLE CHOICE QUIZZES (MCQs) for AS Chemistry, provided in two formats – PowerPoint for a fun classroom activity and a paper quiz for assessment or homework. Either quiz would be an invaluable tool for revision. The questions are graded – starting off fairly straightforward and progressing to more challenging examples. A, B, C, D cards for students to hold up in class can be made from the template provided. This multiple choice quiz on atomic structure is part of a series primarily aimed at the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.1 Atomic structure and isotopes Please review! Content covered • Protons, neutrons and electrons – mass and relative charge • Atomic number and mass number • Isotopes • Key definitions Links Next multiple choice quiz: Atomic masses (in preparation) For full lesson on Atomic Structure with PowerPoint and worksheet see https://www.tes.com/teaching-resource/atomic-structure-ocr-as-chemistry-12182593

One of a series of FREE resources designed to help AS Chemistry students to finish the AS specification by self-study before starting the A2 year. This knowledge organiser/poster/mat summarises all the important information about the chemistry of alcohols in a colourful and concise way. It can be printed on one A4 page. For a more detailed treatment of the topic see Chemistry of Alcohols – AS homelearning https://www.tes.com/teaching-resource/chemistry-of-alcohols-as-home-learning-12273938, which includes an interactive, animated PowerPoint and a worksheet with answers. Please review! Content covered • Primary, secondary and tertiary alcohols • Substitution reaction of alcohols • Oxidation of alcohols • Elimination (dehydration) reaction of alcohols • Reactions of primary, secondary and tertiary alcohols • Reaction classification • Reagents and conditions • Structural equations • Key definitions • Heating under reflux • Distillation to prevent complete oxidation

Serving as an introduction to atomic structure, this lesson on the Changing Atom includes all the materials needed for a group activity on the contributions of key scientists to the development of the theory of atomic structure. It features an interactive PowerPoint including starter, group activity, questions and plenary along with a worksheet and a lesson plan. This is the first lesson in a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.1 Atomic structure and isotopes Please review! Content covered How Science Works - HSW7 - The changing accepted models of atomic structure over time. The contributions of five scientists to the development of the theory of atomic structure. Duration : One part lesson (setting up) and one whole lesson (group activity and plenary). The rest of the part lesson can be spent starting atomic structure (see atomic structure lesson) Links Next lesson – Topic 1: Atomic structure https://www.tes.com/teaching-resource/atomic-structure-ocr-as-chemistry-12182593 Bundle covering the whole of the OCR A level chemistry specification sections 2.1.1 and 2.1.2. (topics 1-4) https://www.tes.com/teaching-resource/atomic-masses-formulae-and-equations-ocr-as-chemistry-12348685

This is the first in a series of ACTIVE REVISION SHEETS for AS Chemistry, designed to help students actively learn by filling in blanks and testing themselves as part of their revision. Each revision sheet consists of alternating A4 question and answer pages. The question pages have gaps and tables to fill in, as well as quick check questions. The answer pages have the same format, but with all the blanks filled in and answers to all questions. The question and answer pages should be printed back to back on A4 or side by side on A3 or A4 (reduced) – in the latter case the sheets should be folded in half to hide the answers. Ideal for self-study or classroom use, students can complete the question pages before looking at the answers to check their learning. Learning outcomes and tick boxes for each outcome are also provided. This 4 page revision sheet on atomic structure is part of a series primarily aimed at the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.1 Atomic structure and isotopes Please review! Content covered • Protons, neutrons and electrons – mass and relative charge • Atomic number and mass number • Isotopes • Key definitions Links Next revision sheet: Atomic masses https://www.tes.com/teaching-resource/atomic-masses-as-active-revision-12251537 For full lesson with PowerPoint and worksheet see https://www.tes.com/teaching-resource/atomic-structure-ocr-as-chemistry-12182593

This is part of a series of ACTIVE REVISION SHEETS for AS Chemistry, designed to help students actively learn by filling in blanks and testing themselves as part of their revision. Each revision sheet consists of alternating A4 question and answer pages. The question pages have gaps and tables to fill in, as well as quick check questions. The answer pages have the same format, but with all the blanks filled in and answers to all questions. The question and answer pages should be printed back to back on A4 or side by side on A3 or A4 (reduced) – in the latter case the sheets should be folded in half to hide the answers. Ideal for self-study or classroom use, students can complete the question pages before looking at the answers to check their learning. Learning outcomes and tick boxes for each outcome are also provided. This 6 page revision sheet on atomic masses is part of a series primarily aimed at the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.1 Atomic structure and isotopes Please review! Content covered • Relative masses - comparison of masses to carbon-12 • Calculating relative atomic mass from the masses and abundances of the isotopes • Mass spectrometry and its use in the above • Calculating relative molecular and relative formula masses from formulae • Key definitions of relative atomic mass and relative isotopic mass Links Previous revision sheet – Atomic structure Next revision sheet – Formulae and equations For full lesson with PowerPoint and worksheet see also Topic 3 - Atomic masses https://www.tes.com/teaching-resource/atomic-masses-ocr-as-chemistry-12183618

A fun quiz on naming alkanes and cycloalkanes, based on the format used by A Question of Sport in their picture quiz. Can be used as a team or individual activity, using mini whiteboards to write the answers. A linked interactive PowerPoint, with answers and explanations, is provided along with full teaching notes. Please review! Content covered: • Application of IUPAC rules of nomenclature for systematically naming organic compounds • Naming alkanes and cycloalkanes • Naming branched alkanes Duration: 20 minutes Links Complete lesson - Topic 41 - Naming hydrocarbons https://www.tes.com/teaching-resource/naming-hydrocarbons-ocr-as-chemistry-12242016